Morphology of dipolar Bose droplets

Boninsegni, Massimo

doi:10.1016/j.rinp.2021.104935

Cited by 3 publications

(1 citation statement)

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“…In panel a) of sity profiles for the same number of particles yet in the absence of the the trapping potential showing the typical droplet shape profiles with the flat top at the cen-ter. We note that a Quantum Monte Carlo study of a model with N = 400 bosons with dipolar attraction and Lennard-Jones repulsion 39 finds free standing onedimensional droplets for weak enough repulsion. The occurrence of a positive chemical potential for large number of particles turns out to be an effect of the trapping potential; indeed, in the absence of confinement, the chemical potential is negative and the system shows the typical density profiles of a droplet.…”

Section: The Model and The Generalized Gross-pitaevskii Equationmentioning

confidence: 82%

Formation and fragmentation of quantum droplets in a quasi-one dimensional dipolar Bose gas

De Palo,

Orignac,

Citro

2022

Preprint

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We theoretically investigate the droplets formation in a tightly trapped one-dimensional dipolar gas of bosonic atoms. When the strength of the dipolar interaction becomes sufficiently attractive compared to the contact one, we show how a solitonic-like density profile evolves into a liquid-like droplet on increasing the number of particles in the trap. The incipient gas-liquid transition is also signalled by a steep increase of the breathing mode and a change in sign of the chemical potential. Upon a sudden release of the trap, varying the number of trapped atoms and the scattering length, the numerical solution of a time-dependent generalized Gross-Pitaevskii equation shows either an evaporation of the cloud, the formation of a single self-bound droplet or a fragmentation in multiple droplets. These results can be probed with lanthanides atoms and help in characterizing the effect of the dipolar interaction in a quasi-one-dimensional geometry .

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Section: The Model and The Generalized Gross-pitaevskii Equationmentioning

confidence: 82%